From the collection Dr. David P. Chandler on the site http://papaintellivision.com/
The documents herein regard the Mattel Electronics Intellivision project ranging from its inception in 1977 until the end of Chandler's involvement with the company in 1983.
This document features several different papers relating to the Intellivision modem which was in production in the 1980 period. Pages 1-4 feature a detailed part list breakdown for the modem pricing by engineer Tim R Nesbit, dated from August 20th, 1980. Pages 5-6 are the same page of examination of the current personal computer modem market, detailing both technology and price by Scott Klynas dated June 17th, 1980. On pages 7-8, Scott Kylnas provides a general description of modems and applications for modems as well as detail that the Intellivision modem would attach directly to the Keyboard Component.
Pages 9-11 provide a detailed schedule of design and production for the modem peripheral from July 31, 1980. However it is difficult to tell if the outline of information starts from the paper’s current date or some unspecified timeframe. The estimate was to start production on the modem peripheral within 25 weeks of the start. Pages 12-13 feature an earlier letter from Mr. Kylnas on known modem manufacturers and their approximate pricing models. Pages 14-15 feature handwritten notes and diagrams from Mr. Kylnas. The first from August 20th, 1980 features an approximation of squares inches needed for a modem case and the last from July 24, 1980 provides a system diagram for the Intellivision Modem.
Uploaded by The History of How We Play on